Marbleizing artificial stone.



A. HIE-SCH.

MARBLEIZING ARTIFICIAL STONE.

APPLICATION FILED 0GT.12, 1910 1,012,016. Patented Dec. 19, 1911.

Human,

AUGUST RIESCH, OF CINCINNATI, OHIO.

MARBLEIZING ARTIFICIAL STONE;

Specification of Letters Patent.

Patented Dec. 19, 1911.

Application filed October 12, 1910. Serial No. 586,590.

To all whom it may concern:

Be it known that I, Auous'r Rinson, a subject of the Emperor of Germany, and resident of Cincinnati, county of Hamilton, and State of Ohio, have invented certain new and useful Improvements in ,Marbleizmg Artificial Stone, of which the following is a specification.

This invention relates to artificial stone or rocess of lnarbleization or coloring the articial stone, so that it epresents marble and so that the colors are arranged artistically and naturally.

A further object is to produce a processfor quickly and effectively coloring or marbleizing artificial stone or marble, and for introducing the cploring material into and through the material employed in forming the artificial stone.

These and other objects I attain by means of the rocess herein described.

Inst e drawings accompanying this ap lication and forming a part thereof, I have illustrated an apparatus which may be employed in carrying forward the successive steps comprised in the process described as an embodiment of my invention.

Fi ure 1 is a sectional view of a conveyer, and illustrates one step in the process described as an embodiment of my invention.

Fig. 2 is a sectional view corresponding to Fig. 1, and illustrates another step of the process. Fig. 3 is a section along line 33 of Fig. 1, in the direction of the arrows, and illustrates a screen, which forms apart of the apparatus illustrated in Figs. 1 and 2. Fig. 4 IS a sectional view of a pan, which is employed in carrying forward the first'step of the process herein described.

In carrying out my invention, Itake ad vantage of the fact that plastic or wet coloring material will adhere or cling to metal or wood strips, and will be gradually disengaged from the strips and form veins of color, when the strips are forced or drawn throu h plastic material.

In t e drawings, I have shown a mcchanically a'ctuated apparatus, which may be employed in carrying out my invention.

The apparatus consists of a screw con- .veyer 5, mounted in a casing 6,, which is provlded with a hopper 7, for receiving plastic material or compound 8, employe in the manufacture of artificial. stone. A screen 9 is located on the casing (l, at the discharge marble, and has for an object to produce a' conveyer, prior to the stone-formin end of the conveyor 5, and the conveyor is arranged to receive the com ound 8 from the hopper, convey it throng the casing 6 and force it through'the screen 9. A trou h 10 is shownas formed integrally with t e casing 6, and is so located that it receives the plastic compound 8 discharged from the conveyor, after it has passed through the screenl In carrying out my invention, I find it convenient to form a layer of the material or compound 8 in a an 11, illustratedin Fig-4. I then sprea a layer of coloring material 12 in the pan and moisten the coloring material by spraying it with a suitable liquid. The moisture renders the coloring material plastic and causes it to adhere to the surface of the stone-forming compound 8. The coloring material may, of course, be applied to the compound 8, in a plastic condition, and the step of moistemng it will then be omitted. After the coloring material 12 is in place on the compound 8, I divide the'material in the pan 11 into sections and so introduce each section into the hopper 7 of the conveyor, that the coloring material 12, forming a art of the section, will be forced through tie screen 9, by the material 8, which forms a part of the section.

In the drawings, I have illustrated the conveyor 6 provided with a crank 13, adapted to be (IJOl'tllCd by hand; this, however, is merely illustrated, and any suitable means maybe employed for operating the conveyor. The conveyor 5 receives the sections cut from the material in the pan 11, and forces each section throhgh the screen and into the trough 10. If the sections are delivered to the hopper continuously, the conveyer will deliver a continuous stream of plastic material through the screen, and the screen will out this material into ribbons or long segments. in the operation of the conveyor, .t-he plnstic coloring material 12 of each section is first forced through the screen, and,

consequently, a portion of the coloring matcrinl adheres to the wires or strips which fornhthe screen, and this material is imparted to the material 8 as it isiw'ced through the screen. The result is, that the material issuing from the screen 9 is divided into longitudinal segments or longitudinally extending ribbons and each segment or ribbon is coated with coloring material. In order to obtain a more general and natural diSfiibution of the coloring material throughout the stone-forming compound, I ass it through the screen 9 a second -time. n doing this, I first cut substantially equal'segments from the material contained in the trough 10 and introduce them into the hopper 7 in such a. manner, transverselyliy the screen, when the material passes through the'screen a second time.

In Fig. 2, I have illustrated the manner in which the segments from the trough 10 are introduced into the hopper7, and it will be seen that the sections are introduced transversely to the conve er, so that the color veins extend substantially at right angles to the axis of the "conveyor. A. portion of the coloring material is taken up by the wires or strips forming the screen, as the veins of color in the segments pass through the screen, and-is im arted to't-he plastic material transversing t 0 screen, and in this manner is more thoroughly distributed throughout the plastic material. The mate'- rial may be forcedthrough the screen as many times as is desired, and a numbcrof different colors may be employed. After" the desired marbleization or distribution of the color is accomplished, the material or compound 8 is formed in slabs or plates, and is allowed to'dry or harden for use.

Various coloring material ma be employed in carrying out my invention, and I may mention the following colorin material as an example of those that have successfully used :One partof oxid of iron one to twenty )arts of stone powder an magnesium oxi and suflicient moisture to render the mixture plastic.

that the color. veins will be cut' 'Qlayer into ments throng W'hat I claim is 1, The process of imparting color to art:- ficial stone, which consists in formin artificial stone compound into a layer, p acing a layer of coloring material on said compound, then forcing the layer through a screen in such a way that the color material passes through the screen, prior to the com ound.

2. heprocess of coloring or marb eizing artificial stone, which consists in forming the plastic stone-forming compound into a .layer, placing a thin coat of color material .-on the surface of the layer, dividing the s ments and forcing the seg a screen or net-work of wire or strips, so that the layer of color on each segment is forced through the screen, prior to the lastic material.

3. T e process of coloring or marhleizing artificial stone, which consists in forming the, artificial stone com ound in a layer spreading a thin coat 0 coloring materia on the layer of com ound, dividing the color covering compoun into segments successively, forcing the segments through a screen, so that the layer of coloring material of each segment passes throu h the screen, prior to the compoundon w rich it is located, cutting the mass into segments after it has passed through the screen, and forcing the se ments transverselythrough the screen, so t ml; the color veins'formed 1n the segments are cut transversely by the meshes of the screen.

t q AUGUST RIESCH.

Witnesses:

.1 C. H.'B.urrn, WALTER F. MURRAY. 

